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Finding the Fourth Proportional to 318,211,431, 477,315,785.70 and 88,179,855

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Solution

The fourth proportional to 318,211,431, 477,315,785.70 and 88,179,855 is: 132,269,405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,211,431 : 477,315,785.70 = 88,179,855 : x
  2. Step 2: Convert to fraction form
    318,211,431/477,315,785.70 = 88,179,855/x
  3. Step 3: Cross multiply
    318,211,431x = 477,315,785.70 × 88,179,855
  4. Step 4: Simplify right side
    318,211,431x = 42,089,636,772,237,072
  5. Step 5: Solve for x
    x = 42,089,636,772,237,072/318,211,431
  6. Step 6: Final answer
    x = 132,269,405.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.